Unit 1: Chemical Bonding
Unit 2: Reactions
Unit 3: Moles
Unit 4: Solution
Unit 5: Gases
100

How many electrons are in a sulfide ion?

18

100

Balance this equation: KCl --> K + Cl2

2KCl --> 2K + Cl2

100

What is the molar mass of NH3?

17.04 g/mol

100

What are the unit for molarity?

M or mol/L

100

What is the Ideal Gas Law?

PV = nRT

200
What is the chemical formula of a compound that contains an element, X, in group 2 and element Y, in group 17?

XY2

200

What type of reaction is the following: Br2 + KI -> KBr + I2?

Single Displacement

200

How many oxygen atoms are present in 8.5 g of magnesium nitrate?

2.1 x 1023 O atoms

200

Calculate the mass of sodium carbonate required to prepare 0.450 L of a 0.89 M solution.

42 g

200

What are the Temp (in K) and P (in kPa) at STP?

T = 273 K and P = 101.325 kPa

300

Write the chemical name for:  Pd(ClO4)2.

Palladium(II) perchlorate

300

Write a chemical reaction for the production of a metal oxide, where the metal is Lithium

Li + O2 -> Li2O

300

0.987 mol of potassium chlorate decompose into potassium chloride and oxygen. Calculate the moles of potassium chloride and oxygen that are formed.

1.48 mol of O2 and 0.987 mol of KCl

300

Use a solubility chart (from your notes) for this question:

At 20°C, 50 g of potassium chloride is added to 100 mL of water. What would you have to do to make the solution saturated?

Heat up solution to 80 degrees

300
What is the value of the molar volume at SATP?

24.8 L

400

Determine if the molecule TeCl2 is polar or non-polar.

Polar

400

Predict the products (chemical formula) for the reaction between: sulfuric acid and aluminium hydroxide.

H2O and Al2(SO4)3

400

You perform a double displacement reaction with 15 grams of copper (II) chloride and 20 grams of sodium nitrate. What is the theoretical yield (in grams) of sodium chloride?

13 g

400

Aqueous sodium sulfide reacts with aqueous iron (II) sulfate. Determine the spectator ions in this reaction.

Na+ and SO42-

400

What volume of carbon dioxide is produced in a complete combustion with 6.40 g of methane gas? All gases at 35°C and 100.0 kPa.

10. g

500

Rank the following from lowest to highest boiling point: TeF2, HF, SiO2

SiO2 < TeF2 < HF

500

Write the chemical formula for the precipitate formed when lead (II) nitrate reacts with hydrosulfuric acid.

PbS

500

What mass of the excess reagent remains in a reaction with 6.71 g of Aluminium and 12.95 g of sulfuric acid?

4.34 g

500

An excess of silver nitrate solution is added to 65 mL of a 2.5 M solution of calcium chloride. Calculate the mass of precipitate that is formed in the reaction.         

47 g

500

A sample of gas has a mass of 7.60 g and occupies a volume of 2.45 L at STP. What is the molar mass of this gas?

69.5 g/mol

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